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Worldwide distributor of NSN parts and consumables located in the USA.

Safety Relief Valve

Model / MPN: 1426DUPLEX | NSN: 4820-00-059-4678
ITAR Registered seal

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Product Details
NATO Stock Number
4820-00-059-4678
Sold in multiples of
DEMIL
NO
Flow Control Device
Disk
Bonnet Type
Exposed spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Valve Discharge Flow Rate
71616.0 pounds per hour
Bolt Hole Quantity
8 1st end
Bolt Hole Quantity
8 2nd end
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Flange Shape
Round with holes 2nd end
Connection Type
Flange 1st end
Connection Type
Flange 2nd end
Maximum Operating Pressure
550.0 pounds per square inch single response
Opening Pressure Setting
525.0 pounds per square inch
Outside Diameter
13.000 inches 1st end
Outside Diameter
9.000 inches 2nd end
Bolt Hole Diameter
0.750 inches 2nd end
Bolt Hole Diameter
1.125 inches 1st end
Bolt Circle Diameter
10.500 inches 1st end
Bolt Circle Diameter
7.500 inches 2nd end
Flange Face Design
Raised straight 1st end
Flange Face Design
Raised straight 2nd end
Raised Face Height
0.062 inches 1st end
Raised Face Height
0.062 inches 2nd end
Raised Face Diameter
6.188 inches 2nd end
Raised Face Diameter
7.312 inches 1st end
Material
Nickel alloy flow control device
Material
Nickel alloy seat
Material
Steel body
Material
Steel stem
Style Designator
Angle
1426DUPLEX Series Parts

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1426DUPLEX Cross Reference